Keep the camera ________ when you take a picture.

The most important thing is to keep _____ when you get into difficulties. 

— What should I pay attention to when I write an application letter?— Try to be _________. Don’t let out information unnecessary to the company unless it favors your getting the job.

People who often stay up late are _________ to suffer from heart attacks than those  who are not.

I knew his wife was very ________ with him about his drinking.